"Somehow we've gotten very comfortable with — you know — $20 million a month burn rates... when did that become OK?" said venture capitalist Bill Gurley to The Wall Street Journal.

But it appears that all that risk and the time of the unicorn is ending. Unfortunately for payment company Square, this change has come just in time for its IPO.

The company isn't necessarily doing poorly, but its IPO filing valuation should alert other unicorns that the future isn't going to be so easy. (Video via Square)

Square plans to price its IPO at $11 to $13 a share, putting the company's market cap around $4 billion. That's a lot of money, but it's about $2 billion less than a year ago when it reportedly had a $6 billion private valuation. (Video via Square)

Square's devaluation is a sign that markets could finally be starting to correct on some of the more risky investments, and a sign that unicorns will likely be more difficult to spot.

In public, anyway. Tech companies on the private market don't have to share financial information with the public. So, some companies are staying private, and probably still raking in the cash. This includes companies like Pinterest and AirBnB. (Video via Pinterest)